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Finding the Fourth Proportional to 405,630.40, 609,482.40 and 360,011.20

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Solution

The fourth proportional to 405,630.40, 609,482.40 and 360,011.20 is: 540,937.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,630.40 : 609,482.40 = 360,011.20 : x
  2. Step 2: Convert to fraction form
    405,630.40/609,482.40 = 360,011.20/x
  3. Step 3: Cross multiply
    405,630.40x = 609,482.40 × 360,011.20
  4. Step 4: Simplify right side
    405,630.40x = 219,420,490,202.88
  5. Step 5: Solve for x
    x = 219,420,490,202.88/405,630.40
  6. Step 6: Final answer
    x = 540,937.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.